ST. LAWRENCE RIVER BASIN

                                     04296500  CLYDE RIVER AT NEWPORT, VT

LOCATION.--Lat 44°56'22", long 72°ll'23", Orleans County, Hydrologic Unit 01110000, on right bank, in Newport, just 
    downstream from small right-bank tributary, and l mi upstream from mouth.
DRAINAGE AREA.--142 mi².
PERIOD OF RECORD.--Discharge records:  May 1909 to September 1919; May 1920 to August 1922, October 1922 to 
    September 1924, November 1928 to May 1936, September 1938 to current year.  Prior to November 1928, published as 
    "at West Derby."
    Water-quality records: Water years 1975-77.
REVISED RECORDS.--WSP 744:  1913(M), drainage area.  WSP 924:  1940.  WSP 1307:  1913-15(M).
GAGE.--Water-stage recorder.  Datum of gage is 682.36 ft above sea level.  May 25, 1909, to September 20, 1915, 
    nonrecording gage, and September 21, 1915, to September 30, 1924, November 16, 1928, to May 4, 1936, water-stage 
    recorder, at site 0.65 mi upstream at different datum. March 6, 1957, to May 11, 1994, water-stage recorder and 
    records of power generation.
REMARKS.--Records good except those for estimated daily discharges, which are fair. Flow regulated by powerplant and 
    reservoirs upstream. No instantaneous peak stage or discharge available for period of March 6, 1957 to May 11, 1994 
    due to diversion of flow around station through canal and penstock of Newport No. 11 powerplant.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 3,900 ft³/s, March 20, 1936, gage height, 5.76 ft, site and datum 
    then in use; maximum daily, 3,610 ft³/s, March 20, 1936; minimum daily discharge, 2.6 ft³/s, June 18, 1956.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 923 ft³/s, April 9, gage height, 5.91 ft; minimum daily discharge, 
    50 ft³/s, October 1, 2, 6-8.

                       DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997

                                                    DAILY MEAN VALUES
 
 DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
   1        50      114      168      219      129      354      409      727      249      155       94      279
   2        50       96      403      199      170      353      426      750      207       79       80      235
   3        51      128      462      244      118      409      435      766      269       88       78      209
   4        51      118      599      262      e96      384      443      780      224       92       75      209
   5        51       84      777      264       96      369      444      740      196       90       72      270
 
   6        50       71      703      265      142      369      452      694      174      124       72      239
   7        50       71      616      300      161      354      469      790       93      161       71      164
   8        50      130      533      276      170      284      760      777      154      180       70      157
   9        52      186      502      201     e165      280      910      766      169      206       70      156
  10        52      174      441      230      115      208      868      767      166      282       70      157
 
  11        51      153      435      280       96      205      768      747      137      216       71      157
  12        51      151      413      280       96      206      701      718       96      192       70      157
  13       109      185      300      249      e96      225      654      695       96      192       74      145
  14        86      185      282      201     e122      271      611      651      157      232      134       95
  15        86      234      281      201     e165      227      565      609      135      383      106      162
 
  16        86      227      281      253      164      206      525      570       90      395       90      112
  17        86      189      229      242     e100     e185      514      538      139      387      126      151
  18        83      156      240      216       98     e155      518      515      163      403      161      118
  19        77      114      279     e214      170     e150      575      501      163      406      194       99
  20        71      123      334      163      201      168      628      496      112      406      209      102
 
  21        75      155      348      163      200      169      667      487       87      250      196      100
  22        79      132      319      163      204      169      691      479       98      198      305       99
  23       159      104      300      165      310      169      702      464      180      187      397      144
  24       186      154      283     e160      413      169      702      459      189      201      396      144
  25       186      154      340      164      431      169      693      455      178      288      399      163
 
  26       186      161      342      163      421      170      684      445       98      243      401      117
  27       186      111      346      122      369      169      655      384       80      101      390      161
  28       188       91      344      120      370      170      653      317       80      161      314      125
  29       187       92      350      162      ---      176      692      298       79      120      295       96
  30       164      147      350     e160      ---      333      717      299       94       95      207      117
  31       153      ---      321      121      ---      343      ---      298      ---       95      195      ---
 
 TOTAL    3042     4190    11921     6422     5388     7568    18531    17982     4352     6608     5482     4639
 MEAN     98.1      140      385      207      192      244      618      580      145      213      177      155
 MAX       188      234      777      300      431      409      910      790      269      406      401      279
 MIN        50       71      168      120       96      150      409      298       79       79       70       95
 CFSM      .69      .98     2.71     1.46     1.36     1.72     4.35     4.08     1.02     1.50     1.25     1.09
 IN.       .80     1.10     3.12     1.68     1.41     1.98     4.85     4.71     1.14     1.73     1.44     1.22
 
 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1909-24, 28-36, 38-97, BY WATER YEAR (WY)
 
 MEAN      179      233      222      182      159      279      690      500      241      148      129      129
 MAX       576      560      599      370      477     1136     1192     1042      545      464      369      523
 (WY)     1946     1919     1984     1996     1981     1936     1933     1972     1978     1973     1976     1924
 MIN      50.7     79.5     80.4     62.9     19.1     72.8      186      179     74.0     47.2     39.6     41.9
 (WY)     1962     1923     1923     1948     1979     1911     1979     1941     1988     1991     1909     1984
 
 SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR      WATER YEARS 1909-24, 28-36, 38-97
 
 ANNUAL TOTAL                      119206                      96125                                             
 ANNUAL MEAN                          326                        263                        256                  
 HIGHEST ANNUAL MEAN                                                                        394              1974
 LOWEST ANNUAL MEAN                                                                         153              1979
 HIGHEST DAILY MEAN                  1830     Apr 25             910     Apr  9            3610       Mar 20 1936
 LOWEST DAILY MEAN                     50     Sep 27            a 50     Oct  1               2.6     Jun 18 1956
 ANNUAL SEVEN-DAY MINIMUM              50     Sep 30              50     Oct  1              14       Oct  9 1961
 INSTANTANEOUS PEAK FLOW                                         923     Apr  9         bc 3900       Mar 20 1936
 INSTANTANEOUS PEAK STAGE                                          5.91  Apr  9            bc 5.76    Mar 20 1936
 ANNUAL RUNOFF (CFSM)                   2.29                       1.85                       1.80               
 ANNUAL RUNOFF (INCHES)                31.23                      25.18                      24.51               
 10 PERCENT EXCEEDS                   670                        603                        529                  
 50 PERCENT EXCEEDS                   244                        188                        180                  
 90 PERCENT EXCEEDS                    63                         85                         63                  
 
   a  Also occurred October 2, 6-8.
   b  No instantaneous peak stage or discharge available for period of March 6, 1957 to May 11, 1994.
   c  Site and datum then in use.
   e  Estimated.

The URL for this page is: http://nh.water.usgs.gov/Publications/annual97/04296500.htm

Back to station selections
Back to District Home Page
To WRD National Home Page
To USGS National Home Page
Comments and suggestions can be sent to NH-VT Webmaster